<script setup>
import { getCategoryFilterAPI, getSubCategoryAPI  } from '@/apis/category.js'
import { ref,onMounted } from 'vue'
import { useRoute } from 'vue-router'
import GoodsItem from '../Home/components/GoodsItem.vue'


// 获取二级分类列表数据，面包屑导航
const filterData = ref({})
const route = useRoute()
const getFilterData = async (id = route.params.id) => {
  const res = await getCategoryFilterAPI(id)
  filterData.value = res.result
  console.log('filter data:', filterData.value)
}
onMounted(()=>{
  getFilterData()
})

//获取基础列表数据渲染
const goodList = ref({})
const reqData = ref({
  categoryId: route.params.id,
  page: 1,
  pageSize: 20,
  sortField: 'publishTime'
})
const getGoodList = async(data) => {
  const res = await getSubCategoryAPI(data)
  goodList.value = res.result.items
  console.log('goodList data:', goodList.value)
}
onMounted(()=>{
  getGoodList(reqData.value)
})

function tabChange(){
  console.log('tab切换了', reqData.value.sortField)
  reqData.value.page = 1
  getGoodList(reqData.value)
}

// 加载更多
const disabled = ref(false)
const load = async () => {
  console.log('加载更多数据咯')
  // 获取下一页的数据
  reqData.value.page++
  const res = await getSubCategoryAPI(reqData.value)
  goodList.value = [...goodList.value, ...res.result.items]
  // 加载完毕 停止监听
  if (res.result.items.length === 0) {
    disabled.value = true
  }
}
</script>

<template>
  <div class="container ">
    <!-- 面包屑 -->
    <div class="bread-container">
      <el-breadcrumb separator=">">
        <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
        <!-- 能跳转上上一级 -->
        <el-breadcrumb-item :to="{ path: `/category/${filterData.parentId}` }">{{filterData.parentName}}</el-breadcrumb-item>
        <el-breadcrumb-item>{{filterData.name}}</el-breadcrumb-item>

      </el-breadcrumb>

    </div>
    <!-- tabs标签页的使用：el-tabs是页标签容器，el-tab-pane子组件，每个子组件代表一个标签页的内容 -->
    <!-- v-model双向绑定选中标签的name -->
    <!-- @tab-change 用于监听标签页切换的事件。当用户点击某个标签页进行切换时，会触发这个事件。 -->
    <div class="sub-container">
      <el-tabs v-model="reqData.sortField" @tab-change="tabChange">
        <!-- el-tab-pane通过 label 属性展示给用户的文字，而 name 属性则用于与 Tabs 组件中 v-model 的值匹配。 -->
        <el-tab-pane label="最新商品" name="publishTime"></el-tab-pane>

        <el-tab-pane label="最高人气" name="orderNum"></el-tab-pane>

        <el-tab-pane label="评论最多" name="evaluateNum"></el-tab-pane>

      </el-tabs>

      <div class="body" v-infinite-scroll="load" :infinite-scroll-disabled="disabled">
         <GoodsItem v-for="item in goodList" :goods="item" :key="item.id" />
      </div>

    </div>

  </div>

</template>



<style lang="scss" scoped>
.bread-container {
  padding: 25px 0;
  color: #666;
}

.sub-container {
  padding: 20px 10px;
  background-color: #fff;

  .body {
    display: flex;
    flex-wrap: wrap;
    padding: 0 10px;
  }

  .goods-item {
    display: block;
    width: 220px;
    margin-right: 20px;
    padding: 20px 30px;
    text-align: center;

    img {
      width: 160px;
      height: 160px;
    }

    p {
      padding-top: 10px;
    }

    .name {
      font-size: 16px;
    }

    .desc {
      color: #999;
      height: 29px;
    }

    .price {
      color: $priceColor;
      font-size: 20px;
    }
  }

  .pagination-container {
    margin-top: 20px;
    display: flex;
    justify-content: center;
  }


}
</style>
